<template>
  <div class="school">
    <h2>学校名称：{{ name }}</h2>
    <h2>学校地址：{{ address }}</h2>
  </div>
</template>

<script>
import pubsub from "pubsub-js";

export default {
  name: "School",
  data() {
    return {
      name: "尚硅谷",
      address: "北京",
    };
  },
  mounted() {
    // console.log('School',this)
    /* this.$bus.$on('hello',(data)=>{
				console.log('我是School组件，收到了数据',data)
			}) */
			
    //订阅消息,消息名hello，参数msgName:消息名,参数data:消息内容
    this.pubId = pubsub.subscribe("hello", (msgName, data) => {
      console.log(this); //this为VueComponent
      console.log("有人发布了hello消息，hello消息的回调执行了", msgName, data);
    });
  },
  beforeDestroy() {
    // this.$bus.$off('hello')

    // 取消订阅
    pubsub.unsubscribe(this.pubId);
  },
};
</script>

<style scoped>
.school {
  background-color: skyblue;
  padding: 5px;
}
</style>
